Antifreeze cooling system



Oct. 3, 1939. L z ET AL ANTIFREEZE COOLING SYSTEM Filed Oct. 19, 1937 k@c'ca &

INVENTORS BY 1195a Patented Oct. 3, 1939 UNITED STATES PATENT OFFICE 2,175,121 ANTIFREEZE COOLING SYSTEM Louis Katz and Daniel Pica, Chicago, 111. Application October 19, 1937, Serial No. 169,867 *2 Claims. (cine-178.5)

Our invention relates to internal combustion engines, and includes among its objects and advantages the provision of an improved antifreeze cooling system.

An object of our invention is to provide novel means for automatically and completely draining the radiator and engine of the liquid used for cooling purposes upon stopping of the engine and in which the device is so constructed as to automatically fill the radiator and the engine when the engine is started.

Another object is to provide a device of the type described in which the liquid used for cooling the engine is automatically delivered to a storage tank upon stopping of the engine and in which the storage tank is so constructed as to prevent freezing of the liquid under extremely low temperatures and for a considerable period of time.

In the accompanying drawing:

Fig. l is a side view of an internal combustion engine illustrating our invention applied thereto;

Fig. 2 is a longitudinal sectional view of the storage tank and operating mechanism; and

Fig. 3 is a sectional view along the line 33 of Fig. 2.

In the embodiment selected to illustrate our invention, we make use of an engine H] such as is employed in automobiles and trucks, and in which the engine is associated with a radiator l2 having communication with the water jacket of the engine in the usual manner through the medium of conduits l4 and I6. A conventional pump I1 is employed. The engine also includes the usual intake manifold l8, together with a conduit 28 communicating therewith, which conduit is associated with the carburetor 22. The structure so far described is old and well known in the art and need not be defined in further detail;

Our invention resides in the provision of a liquid storage drum 24 mounted on one of the frame members 26 of the chassis through the medium of suitable brackets 28 bolted to the frame member 26 at 3B. Specifically, the drum 24 comprises a cylinder 32 enclosed within insulation 34 with the outer shell 36 enclosing the insulation for protective purposes. Cylinder 32 is flanged at each end as at 38 to provide supports for closure plates 40 and 42 which are made secure by bolts 44.

Within the cylinder 32 we mount a partition 46 in the nature of a plate bent to provide flanges 48 welded to the cylinder. Partition .6 divides the cylinder 32 into chambers 58 and 52.

tition 46. Thus, the spring 62 urges Within the chamber 50 we mount a piston 54 which is fixedly connected with a piston rod 56, the latter being in turn fixedly connected with a piston 58 located in the chamber 52. Partition 46 is provided with a suitable packing gland 58 which slidably supports the piston rod 56. Pistons 54 and 58 operate as a unit and when the engine is shut off, the pistons are positioned according to Fig. 2.. A compression spring 62 has one end arranged in abutting relation with the piston 54 and its opposite end abutting the parthe piston 54 in the direction of the plate 42 and any movement of the piston 54 imparts a corresponding movement to the piston 58.

Chamber 50 communicates with a conduit 64, which in turn has communication with a flexible conduit 66 attached to the T-coupling 68 adjacent the radiator l2, which coupling communicates with the conduit l4. Chamber 52 has communication with the intake manifold of the engine through the medium of a tube 10 having one end secured to the plate 48 and its opposite end connected with the conduit 26. Chamber 52 is provided with an air bleed 12, while chamber 58 includes an air bleed 14 in the nature of a tube bent downwardly and enclosed within insulation 16.

From the foregoing description of the various parts of the device the operation thereof, will be readily understood. Chamber 50 is of such capacity as to accommodate all the liquid employed in the cooling system of the engine. Upon starting of the engine, suction created in the chamber 52 through the pipe 10 exerts a pull on the piston 58, which in turn moves the piston 54 in the direction of the partition 46. Such movement of the piston 54 causes the water or other liquid in the chamber to be forced into the cooling system of the engine by way of the conduit 64. .40

So long as the engine is running the suction in the chamber 52 will hold the pistons 54 and 58 in the dotted line position of Fig. 2, at which time the cooling liquid is maintained in the cooling system.

Upon stopping of the engine, and as soon as the suction in the chamber 52 has been relieved, the pistons will move in the direction of their full line position, at which time the water or other liquid in the cooling system returns to the chamber 50. A conduit 86 communicates with the lower part of water jacket of the engine block and the conduit 66 to insure complete drainage of the water jacket. Spring 62 is of such tension as to overcome friction and to insure return of the pistons to their normal position. The drum 24 is so insulated as to prevent freezing of the Water for long periods of time and at extremely low temperatures. With the water or cooling liquid once heated, the starting of the engine in cold weather is facilitated because of the temperature of the Water stored in the chamber 50.

Our system is completely automatic and is devoid of complicated valves and storage facilities. The device is applicable to engines of conventional design. The only moving parts reside in the pistons and the piston rod which connects the two. Because of the simple and du able construction the system will last indefinitely.

In Fig. 2, we illustrate insulation 18 adjacent the plates 4t and 42, which insulation is enclosed within plates 8E] attached to the shell 36. Cylinder 32 is provided with an opening 82 which is closed by a cover 84 held in place by the insulation 34. Opening 82 lends access to the packing glands for adjusting purposes.

Without further elaboration, the foregoing so fully explains our invention that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

We claim:

1. The combination with the liquid cooling circuit of an internal combustion engine having an intake manifold, of a storage tank comprising a suction chamber and a liquid storage chamber, a conduit communicating with the liquid storage chamber and the liquid cooling circuit, a conduit between the suction chamber and the intake manifold, a piston in each of said suction and liquid chambers, said pistons being connected as a unit, the piston in the suction chamber being controlled by the suction in the intake manifold for moving the piston in the liquid storage chamber, to force the liquid therein into the liquid cooling circuit.

2. The combination with the liquid cooling circuit of an internal combustion engine having an intake manifold, of a storage tank comprising a suction chamber and a liquid storage chamber, a conduit communicating with the liquid storage chamber and the liquid cooling circuit, a conduit between the suction chamber and the intake manifold, a piston in each of said suction and liquid chambers, said pistons being connected as a unit, the piston in the suction chamber being controlled by the suction in the intake manifold for moving the piston in the liquid storage chamber, to force the liquid therein into the liquid cooling circuit, the storage tank being located below the liquid cooling circuit, and said pistons returning to their normal positions when the suction in the intake manifold approximates zero, to permit the liquid in the cooling circuit to drain into the said liquid storage chamber.

3. The combination with the liquid cool-ing circuit of an internal combustion engine having an intake manifold, of a storage tank comprising a suction chamber and a liquid storage chamber, a conduit communicating with the liquid storage chamber and the liquid cooling circuit, a conduit between the suction chamber and the intake manifold, a piston in each of said suction and liquid chambers, said pistons being connected as a unit, the piston in the suction chamber being controlled by the suction in the intake manifold for moving the piston in the liquid storage chamber, to force the liquid therein into the liquid cooling circuit, and insulation enclosing the storage tank.

4. The combination with the liquid cooling circuit of an internal combustion engine having an intake manifold, of a tank having a partition therein to divide the tank into a liquid storage chamber and a suction chamber, a piston located inside each chamber, the partition having an opening, and means extending through said opening and connected with said pistons, a conduit between the liquid storage chamber and the liquid cooling circuit, and a conduit between the suction chamber and the intake manifold, the piston in the suction chamber being responsive to suction in the intake manifold for moving the piston in the liquid storage chamber, to force the liquid therein into the liquid cooling circuit.

5. The combination with the liquid cooling circuit of an internal combustion engine having an intake manifold, of a tank having a partition therein to divide the tank into a liquid storage chamber and a suction chamber, a piston located inside each chamber, the partition having an opening, and means extending through said opening and connected with said pistons, a conduit between the liquid storage chamber and the liquid cooling circuit, and a conduit between the suction chamber and the intake manifold, the piston in the suction chamber being responsive to suction in the intake manifold for moving the piston in the liquid storage chamber, to force the liquid therein into the liquid cooling circuit, the liquid storage chamber and the suction chamber being provided with air bleeds.

6. The combination with the liquid cooling circuit of an internal combustion engine having an intake manifold, of a tank having a partition therein to divide the tank into a liquid storage chamber and a suction chamber, a piston located inside each chamber, the partition having an opening, means extending through said opening and connected with said pistons, a conduit between the liquid storage chamber and the liquid cooling circuit, a conduit between the suction chamber and the intake manifold, the piston in the suction chamber being responsive to suction in the intake manifold for moving the piston in the liquid storage chamber, to force the liquid therein into the liquid cooling circuit, and insulation enclosing said tank.

'7. The combination with the liquid cooling circuit of an internal combustion engine having an intake manifold, of a tank having a partition therein todivide the tank into a liquid storage chamber and a suction chamber, a piston located inside each chamber, the partition having an opening, means extending through said opening and connected with said pistons, a conduit between the liquid storage chamber and the liquid cooling circuit, a conduit between the suction chamber and the intake manifold, the piston in the suction chamber being responsive to suction in the intake manifold for moving the piston in the liquid storage chamber, to force the liquid therein into the liquid cooling circuit, and resilient means positioned between the piston in the storage chamber and said partition for urging both pistons to their normal positions.

LOUIS KATZ, DANIEL PICA. 

